Public bug reported:
Ubuntu 14.04LTS
pm-utils 1.4.1-13ubuntu0.1
When issuing the pm-suspend command, the scripts set the HIBERNATE_MODE in
/sys/power/disk to "suspend".
There is some shell magic to save the previous setting in variable
HIBERNATE_MODE_SAVE, but this fails under
the default shell /bin/dash (works correctly with /bin/bash).
Effect: if you use pm-suspend once, the effective HIBERNATE_MODE in
/sys/power/disk stays in "suspend", and
any subsequent pm-hibernate will also just do a suspend instead of "platform"
or "shutdown".
** Affects: pm-utils (Ubuntu)
Importance: Undecided
Status: New
** Tags: bashism hibernate pm-utils suspend
** Patch added: "escape special chars in parameter expansion for
HIBERNATE_MODE_SAVE"
https://bugs.launchpad.net/bugs/1394388/+attachment/4264030/+files/hibernate_mode_save-bashism.patch
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https://bugs.launchpad.net/bugs/1394388
Title:
pm-suspend not restoring /sys/power/disk with /bin/dash
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